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All Journal VALENSI Jurnal Pendidikan Kimia Jurnal Inovasi Pendidikan IPA Indonesian Journal of Chemistry Paedagogie EDUKATIF : JURNAL ILMU PENDIDIKAN JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Pengabdian Masyarakat Bangsa Jurnal Sains Materi Indonesia PAEDAGOGIE
Budi Hastuti
Department of Chemistry Education, Faculty of Faculty of Teacher Training and Education, Universitas Sebelas Maret, Jl. Ir. Sutami 36A Surakarta 57126
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Mengoptimalkan Kreatifitas Prepare and Service Non-Alcohol Drink melalui Broad Based Education and Life Skill bagi Siswa SMK Hastuti, Budi
Paedagogie Vol 14 No 2 (2019)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/paedagogie.v14i2.3013

Abstract

This study aims to increase students’ creativity of preparing and serving non-alcoholic drinks. Broad-Based Education and Life Skills are applied in learning activities. XI grade students of Restaurant 1 Program are involved as the subjects. It is conducted in the 2nd semester in SMKN 3 of Magelang. Based on observation, it is found that the creativity of concocting drinks is 61.56% and increases in Cycle I to 72%. In Cycle II it increases to 100%. Juggling skills increases from 60% to 75% in Cycle I, and to 100% in Cycle II. Students’ achievement increases from 70% to 78% in Cycle I, and to 100% in Cycle II. Hence the implementation of Broad-Based Education and Life Skills can enhance students’ creativity in Prepare and Service Non-Alcohol Drink.
The Effect of pH on Quercetin Release from Zn Crosslinked Chitosan-Alginate Membrane and Its Kinetics Hastuti, Budi; Nurroudhlotiningtyas, Tejayani; Hadi, Saptono; Martanisa, Mutiah
Indonesian Journal of Chemistry Vol 26, No 1 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.104072

Abstract

This research aims to assess the ability of Zn-crosslinked chitosan (Chi) and alginate (AG) membranes to deliver quercetin into the body by testing the release with variations in the pH of the dissolution medium. Chi-AG membrane crosslinked with Zn and loaded with quercetin to produce Chi-AG-Zn membrane with tear-resistant and elastic properties. The FTIR spectrum of the Zn crosslinked Chi-AG membrane containing quercetin shows the formation of a Chi-AG-Zn membrane with a shift in the characteristic peaks and the formation of new characteristic groups, namely Zn at a wavelength of 549 cm−1 and phenol at 1379 cm−1. SEM testing showed that the surface of the fibrous membrane and quercetin were successfully loaded. Entrapment efficiency testing yielded relatively high results, specifically 91 ± 0.08%. The release of quercetin from the Zn-crosslinked Chi-AG membrane was investigated by varying the pH of the dissolution medium, specifically at pH 1.2, 5.0, and 7.4. The results showed the highest release at pH 7.4. Membrane release follows the Korsmeyer-Peppas model, and the release mechanism is governed by Fick's diffusion. These findings suggest that the Zn-crosslinked Chi-AG membrane has potential as a pH-responsive drug delivery system for targeted release in intestinal conditions.
Co-Authors . Ashadi Anis Wigiani Anuar, Hajar Aurura, Garnish Teantine Bakti Mulyani Choirunnisa, Lutfia Fajar Kamari, Azlan Kirna, Mefi Martanisa, Mutiah Nanang Tri Widodo Nisriyah, Safarin Nurroudhlotiningtyas, Tejayani Puspitasari, Putri Anggun Saptono Hadi, Saptono Sarino . Setyowati, Widiastuti Agustina Eko Soerja Koesnarpadi